Improvement in couplings for shafts for mills



` waited tang WILLIA'MKEAN, OFGHIGAG, ILLINOIS.

LettersPatent No. 111,550, dated February 7, 1871.

IMPROVEMENT IN COUPLINGS FOR'SHAFTSFOR-MLLS.

The Schedule referred to in these Letters Patent and making part of thesame.

T o all whom .fit may concern:

Be it known thatI, .WILLIAM KEAN, of Chicago, in the county of Cook andState of llli11ois,have invented anew and improved Coupling for Shafts;`and I dol hereby-declare that the following is a full, clear, and exactdescriptionthereof', which will enable others skilled in thevart to makeand' use the same, reference being had to the`.accompanying drawingforming part of this specification, in which- Figure l represents alongitudinal section of i'ny improved coupling.

the shafts, as well as the key, and supports the same. The key Grits agrooved portion oi' said sleeve to lock the same to the shafts.

One end of the'kcy abuts against the square end oi' the groove in theshaft A. The other end, however, is arrested by a dovetaled clutch orblock, E, put into a corresponding' aperture or recess at onc end ofthe, sleeve D, and retain d therein by means of a screw, a. rlhs clutchor lock is applied after the key and sleeve have been properly put on.By this means the ends of the key are bot-h properly covered andprevented from catching, and the key is, furthermore, secured iuplaceaud cannot work out.

Having thus described luy invention,

I claim as new and desire to secure `by Letters Patentv rlhe combinationof the clutch E and screw a with the sleeve "D, key C, and shafts A B,all arranged

